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SAAS & E-COMMERCE

S5ARC | Multi-Tenant E-commerce SaaS Platform

Next.js TypeScript Drizzle ORM PostgreSQL SaaS Architecture Multi-Tenancy Zod Tailwind CSS Next-Auth
S5ARC | Multi-Tenant E-commerce SaaS Platform Preview image

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Purpose & Motivation

S5ARC (NextDash Commerce) is more than just a standard e-commerce site; it’s a modern, multi-tenant e-commerce platform built on a robust, scalable, and modern full-stack foundation from the ground up.

Honestly, I was surprised that there isn’t a single, open-source multi-tenant e-commerce platform built on a modern Next.js stack. On the internet, I found over-complicated or outdated solutions and wanted a clean slate to push the limits of what a modern e-commerce platform could be. S5ARC can handle multiple users, their stores, and their clients, all while providing a beautiful UX to both the store owner and the end customer.

This project also served as my personal playground for mastering cutting-edge web patterns, particularly the complexities of multi-tenancy and end-to-end type safety. It’s the “second-time’s-the-charm” attempt at a concept I’m passionate about, and this time, the foundation is built to last.

S5ARC Storefront Screenshot

Key Features & Architecture

S5ARC is a complete platform, delivering a full e-commerce workflow and a robust technical architecture designed to support your motivation.

  • True Multi-Tenant Architecture: The platform’s core. As you noted, it’s built to support multiple users, their stores, and their clients. Each “tenant” (store) is fully isolated with its own products, orders, and customers, with data rigorously segregated at the database and application levels.
  • Comprehensive Admin Dashboard: A powerful, centralized dashboard for store owners to manage all aspects of their business: products, categories, orders, customers, and store settings.
  • Dynamic Customer Storefront: A high-performance, responsive, and server-rendered storefront for a seamless customer browsing and checkout experience.
  • Secure Authentication: A complete, secure authentication system using Better Auth, featuring email/password (with verification), GitHub OAuth, and a secure password reset flow.
  • End-to-End Type Safety: Leverages TypeScript, Zod, and Drizzle ORM to ensure data integrity and application stability from the database query all the way to the UI component.

Tech Stack & Architecture

The technology stack was chosen specifically for performance, reliability, and the scalability required for a multi-tenant platform.

  • Framework: Next.js 15 (App Router)
  • Language: TypeScript
  • ORM & Database: Drizzle ORM with PostgreSQL
  • UI & Styling: Tailwind CSS & shadcn/ui
  • Schema Validation: Zod
  • Authentication: Better Auth

Architectural Challenges & Solutions

An Ecommerce platform like this as a whole is very complex project. There was many challenges from UI/UX to backend to security and so on, here are some mentioned down below.

  • Challenge: Implementing true, high-security data isolation between tenants.

  • Solution: S5ARC’s architecture ensures that one store’s data is completely inaccessible to another. This was achieved through meticulous database schema design and programmatic, query-level filtering on every database request, guaranteeing tenant security.

  • Challenge: Ensuring data integrity and application stability across many different stores.

  • Solution: The platform enforces end-to-end type safety. By leveraging TypeScript, Zod for schema validation, and Drizzle ORM, data is validated at every stage, which drastically reduces bugs and ensures high reliability for all tenants.

Transparency & Open Source

This project is fully open source. Sharing the codebase demonstrates confidence in the quality of the engineering and contributes back to the development community by providing a modern, production-ready blueprint for multi-tenant e-commerce.

  • Explore the Source Code: Github